Can anyone imagine another sports game where you can't play as the professional teams?
If you are buying this game to play as Tiger, Rory, Bryson, ect, do not buy it. You can't actually use the pro players in this game. You can only play against them as opponents.
For career mode, you can't improve specific parts of your game (spin control, length, putting, etc.). You can only upgrade yourself as a player overall.
15 courses isn't really a lot.
Bottom line, it seems like they cut corner on the licensing agreement. They didn't want pay for a ton of courses, they didn't want to pay for the rights to use the players, and the game feels like a moneygrab. Which is too bad, because the game engine itself is really good.